import { login, logout, getInfo } from '@/api/user'
import { getToken, setToken, removeToken } from '@/utils/auth'
import router from '@/router'

import { resetRouter, studentRoutes, adminRoutes, Route_404, constantRoutes } from '@/router'
const getDefaultState = () => {
  return {
    token: getToken(),
    name: '',
    //头像地址
    avatar: '',
    //服务器返回的动态路由验证规则
    roles: [],
    resultRoutes: [],
    allRoutes: []
  }
}


function resultRoutes(roles, allRoutes) {
  let resultRoute = []
  roles.forEach((role) => {
    allRoutes.forEach((item) => {
      if (role == item.name) {
        resultRoute.push(item)
      }
    })
  })

  return resultRoute


}



const state = getDefaultState()

const mutations = {
  RESET_STATE: (state) => {
    Object.assign(state, getDefaultState())
  },
  SET_TOKEN: (state, token) => {
    state.token = token
  },
  SET_NAME: (state, name) => {
    state.name = name
  },
  SET_AVATAR: (state, avatar) => {
    state.avatar = avatar
  },
  //设置动态路由验证规则
  SET_ROLES(state, roles) {
    state.roles = roles
  },
  //保存全部路由
  SET_RESULTROUTES(state, resultRoutes) {
    state.resultRoutes = [...constantRoutes, ...resultRoutes, ...Route_404]
    state.resultRoute = [...resultRoutes, ...Route_404]
    router.addRoutes(state.resultRoute)

  }
}

const actions = {
  // user login
  login({ commit }, userInfo) {
    const { username, password } = userInfo
    return new Promise((resolve, reject) => {
      login({ username: username.trim(), password: password }).then(response => {
        const { data } = response
        commit('SET_TOKEN', data.token)
        setToken(data.token)
        resolve()
      }).catch(error => {
        reject(error)
      })
    })
  },

  // get user info
  getInfo({ commit, state }) {
    return new Promise((resolve, reject) => {
      getInfo(state.token).then(response => {
        const { data } = response

        if (!data) {
          return reject('Verification failed, please Login again.')
        }

        const { name, avatar, roles } = data

        let allRoutes = [...adminRoutes, ...studentRoutes]

        commit('SET_RESULTROUTES', resultRoutes(roles, allRoutes))
        commit('SET_ROLES', roles)
        commit('SET_NAME', name)
        commit('SET_AVATAR', avatar)
        resolve(data)
      }).catch(error => {
        reject(error)
      })
    })
  },

  // user logout
  logout({ commit, state }) {
    return new Promise((resolve, reject) => {
      logout(state.token).then(() => {
        removeToken() // must remove  token  first
        resetRouter()
        commit('RESET_STATE')
        resolve()
      }).catch(error => {
        reject(error)
      })
    })
  },

  // remove token
  resetToken({ commit }) {
    return new Promise(resolve => {
      removeToken() // must remove  token  first
      commit('RESET_STATE')
      resolve()
    })
  }
}

export default {
  namespaced: true,
  state,
  mutations,
  actions
}

